package org.gudy.bouncycastle.crypto.engines;

import org.gudy.bouncycastle.crypto.BlockCipher;
import org.gudy.bouncycastle.crypto.CipherParameters;
import org.gudy.bouncycastle.crypto.DataLengthException;
import org.gudy.bouncycastle.crypto.params.KeyParameter;

/**
 * an implementation of the AES (Rijndael), from FIPS-197.
 * <p>
 * For further details see: <a href="http://csrc.nist.gov/encryption/aes/">http://csrc.nist.gov/encryption/aes/</a>.
 *
 * This implementation is based on optimizations from Dr. Brian Gladman's paper and C code at
 * <a href="http://fp.gladman.plus.com/cryptography_technology/rijndael/">http://fp.gladman.plus.com/cryptography_technology/rijndael/</a>
 *
 * There are three levels of tradeoff of speed vs memory
 * Because java has no preprocessor, they are written as three separate classes from which to choose
 *
 * The fastest uses 8Kbytes of static tables to precompute round calculations, 4 256 word tables for encryption
 * and 4 for decryption.
 *
 * The middle performance version uses only one 256 word table for each, for a total of 2Kbytes,
 * adding 12 rotate operations per round to compute the values contained in the other tables from
 * the contents of the first
 *
 * The slowest version uses no static tables at all and computes the values in each round
 * <p>
 * This file contains the fast version with 8Kbytes of static tables for round precomputation
 *
 */
public class AESFastEngine
    implements BlockCipher
{
    // The S box
    private static final byte[] S = {
        (byte)99, (byte)124, (byte)119, (byte)123, (byte)242, (byte)107, (byte)111, (byte)197,
        (byte)48,   (byte)1, (byte)103,  (byte)43, (byte)254, (byte)215, (byte)171, (byte)118,
        (byte)202, (byte)130, (byte)201, (byte)125, (byte)250,  (byte)89,  (byte)71, (byte)240,
        (byte)173, (byte)212, (byte)162, (byte)175, (byte)156, (byte)164, (byte)114, (byte)192,
        (byte)183, (byte)253, (byte)147,  (byte)38,  (byte)54,  (byte)63, (byte)247, (byte)204,
        (byte)52, (byte)165, (byte)229, (byte)241, (byte)113, (byte)216,  (byte)49,  (byte)21,
        (byte)4, (byte)199,  (byte)35, (byte)195,  (byte)24, (byte)150,   (byte)5, (byte)154,
        (byte)7,  (byte)18, (byte)128, (byte)226, (byte)235,  (byte)39, (byte)178, (byte)117,
        (byte)9, (byte)131,  (byte)44,  (byte)26,  (byte)27, (byte)110,  (byte)90, (byte)160,
        (byte)82,  (byte)59, (byte)214, (byte)179,  (byte)41, (byte)227,  (byte)47, (byte)132,
        (byte)83, (byte)209,   (byte)0, (byte)237,  (byte)32, (byte)252, (byte)177,  (byte)91,
        (byte)106, (byte)203, (byte)190,  (byte)57,  (byte)74,  (byte)76,  (byte)88, (byte)207,
        (byte)208, (byte)239, (byte)170, (byte)251,  (byte)67,  (byte)77,  (byte)51, (byte)133,
        (byte)69, (byte)249,   (byte)2, (byte)127,  (byte)80,  (byte)60, (byte)159, (byte)168,
        (byte)81, (byte)163,  (byte)64, (byte)143, (byte)146, (byte)157,  (byte)56, (byte)245,
        (byte)188, (byte)182, (byte)218,  (byte)33,  (byte)16, (byte)255, (byte)243, (byte)210,
        (byte)205,  (byte)12,  (byte)19, (byte)236,  (byte)95, (byte)151,  (byte)68,  (byte)23,
        (byte)196, (byte)167, (byte)126,  (byte)61, (byte)100,  (byte)93,  (byte)25, (byte)115,
        (byte)96, (byte)129,  (byte)79, (byte)220,  (byte)34,  (byte)42, (byte)144, (byte)136,
        (byte)70, (byte)238, (byte)184,  (byte)20, (byte)222,  (byte)94,  (byte)11, (byte)219,
        (byte)224,  (byte)50,  (byte)58,  (byte)10,  (byte)73,   (byte)6,  (byte)36,  (byte)92,
        (byte)194, (byte)211, (byte)172,  (byte)98, (byte)145, (byte)149, (byte)228, (byte)121,
        (byte)231, (byte)200,  (byte)55, (byte)109, (byte)141, (byte)213,  (byte)78, (byte)169,
        (byte)108,  (byte)86, (byte)244, (byte)234, (byte)101, (byte)122, (byte)174,   (byte)8,
        (byte)186, (byte)120,  (byte)37,  (byte)46,  (byte)28, (byte)166, (byte)180, (byte)198,
        (byte)232, (byte)221, (byte)116,  (byte)31,  (byte)75, (byte)189, (byte)139, (byte)138,
        (byte)112,  (byte)62, (byte)181, (byte)102,  (byte)72,   (byte)3, (byte)246,  (byte)14,
        (byte)97,  (byte)53,  (byte)87, (byte)185, (byte)134, (byte)193,  (byte)29, (byte)158,
        (byte)225, (byte)248, (byte)152,  (byte)17, (byte)105, (byte)217, (byte)142, (byte)148,
        (byte)155,  (byte)30, (byte)135, (byte)233, (byte)206,  (byte)85,  (byte)40, (byte)223,
        (byte)140, (byte)161, (byte)137,  (byte)13, (byte)191, (byte)230,  (byte)66, (byte)104,
        (byte)65, (byte)153,  (byte)45,  (byte)15, (byte)176,  (byte)84, (byte)187,  (byte)22,
    };

    // The inverse S-box
    private static final byte[] Si = {
        (byte)82,   (byte)9, (byte)106, (byte)213,  (byte)48,  (byte)54, (byte)165,  (byte)56,
        (byte)191,  (byte)64, (byte)163, (byte)158, (byte)129, (byte)243, (byte)215, (byte)251,
        (byte)124, (byte)227,  (byte)57, (byte)130, (byte)155,  (byte)47, (byte)255, (byte)135,
        (byte)52, (byte)142,  (byte)67,  (byte)68, (byte)196, (byte)222, (byte)233, (byte)203,
        (byte)84, (byte)123, (byte)148,  (byte)50, (byte)166, (byte)194,  (byte)35,  (byte)61,
        (byte)238,  (byte)76, (byte)149,  (byte)11,  (byte)66, (byte)250, (byte)195,  (byte)78,
        (byte)8,  (byte)46, (byte)161, (byte)102,  (byte)40, (byte)217,  (byte)36, (byte)178,
        (byte)118,  (byte)91, (byte)162,  (byte)73, (byte)109, (byte)139, (byte)209,  (byte)37,
        (byte)114, (byte)248, (byte)246, (byte)100, (byte)134, (byte)104, (byte)152,  (byte)22,
        (byte)212, (byte)164,  (byte)92, (byte)204,  (byte)93, (byte)101, (byte)182, (byte)146,
        (byte)108, (byte)112,  (byte)72,  (byte)80, (byte)253, (byte)237, (byte)185, (byte)218,
        (byte)94,  (byte)21,  (byte)70,  (byte)87, (byte)167, (byte)141, (byte)157, (byte)132,
        (byte)144, (byte)216, (byte)171,   (byte)0, (byte)140, (byte)188, (byte)211,  (byte)10,
        (byte)247, (byte)228,  (byte)88,   (byte)5, (byte)184, (byte)179,  (byte)69,   (byte)6,
        (byte)208,  (byte)44,  (byte)30, (byte)143, (byte)202,  (byte)63,  (byte)15,   (byte)2,
        (byte)193, (byte)175, (byte)189,   (byte)3,   (byte)1,  (byte)19, (byte)138, (byte)107,
        (byte)58, (byte)145,  (byte)17,  (byte)65,  (byte)79, (byte)103, (byte)220, (byte)234,
        (byte)151, (byte)242, (byte)207, (byte)206, (byte)240, (byte)180, (byte)230, (byte)115,
        (byte)150, (byte)172, (byte)116,  (byte)34, (byte)231, (byte)173,  (byte)53, (byte)133,
        (byte)226, (byte)249,  (byte)55, (byte)232,  (byte)28, (byte)117, (byte)223, (byte)110,
        (byte)71, (byte)241,  (byte)26, (byte)113,  (byte)29,  (byte)41, (byte)197, (byte)137,
        (byte)111, (byte)183,  (byte)98,  (byte)14, (byte)170,  (byte)24, (byte)190,  (byte)27,
        (byte)252,  (byte)86,  (byte)62,  (byte)75, (byte)198, (byte)210, (byte)121,  (byte)32,
        (byte)154, (byte)219, (byte)192, (byte)254, (byte)120, (byte)205,  (byte)90, (byte)244,
        (byte)31, (byte)221, (byte)168,  (byte)51, (byte)136,   (byte)7, (byte)199,  (byte)49,
        (byte)177,  (byte)18,  (byte)16,  (byte)89,  (byte)39, (byte)128, (byte)236,  (byte)95,
        (byte)96,  (byte)81, (byte)127, (byte)169,  (byte)25, (byte)181,  (byte)74,  (byte)13,
        (byte)45, (byte)229, (byte)122, (byte)159, (byte)147, (byte)201, (byte)156, (byte)239,
        (byte)160, (byte)224,  (byte)59,  (byte)77, (byte)174,  (byte)42, (byte)245, (byte)176,
        (byte)200, (byte)235, (byte)187,  (byte)60, (byte)131,  (byte)83, (byte)153,  (byte)97,
        (byte)23,  (byte)43,   (byte)4, (byte)126, (byte)186, (byte)119, (byte)214,  (byte)38,
        (byte)225, (byte)105,  (byte)20,  (byte)99,  (byte)85,  (byte)33,  (byte)12, (byte)125,
        };

    // vector used in calculating key schedule (powers of x in GF(256))
    private static final int[] rcon = {
         0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a,
         0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91 };

    // precomputation tables of calculations for rounds
    private static final int[] T0 =
    {
     0xa56363c6, 0x847c7cf8, 0x997777ee, 0x8d7b7bf6, 0x0df2f2ff,
     0xbd6b6bd6, 0xb16f6fde, 0x54c5c591, 0x50303060, 0x03010102,
     0xa96767ce, 0x7d2b2b56, 0x19fefee7, 0x62d7d7b5, 0xe6abab4d,
     0x9a7676ec, 0x45caca8f, 0x9d82821f, 0x40c9c989, 0x877d7dfa,
     0x15fafaef, 0xeb5959b2, 0xc947478e, 0x0bf0f0fb, 0xecadad41,
     0x67d4d4b3, 0xfda2a25f, 0xeaafaf45, 0xbf9c9c23, 0xf7a4a453,
     0x967272e4, 0x5bc0c09b, 0xc2b7b775, 0x1cfdfde1, 0xae93933d,
     0x6a26264c, 0x5a36366c, 0x413f3f7e, 0x02f7f7f5, 0x4fcccc83,
     0x5c343468, 0xf4a5a551, 0x34e5e5d1, 0x08f1f1f9, 0x937171e2,
     0x73d8d8ab, 0x53313162, 0x3f15152a, 0x0c040408, 0x52c7c795,
     0x65232346, 0x5ec3c39d, 0x28181830, 0xa1969637, 0x0f05050a,
     0xb59a9a2f, 0x0907070e, 0x36121224, 0x9b80801b, 0x3de2e2df,
     0x26ebebcd, 0x6927274e, 0xcdb2b27f, 0x9f7575ea, 0x1b090912,
     0x9e83831d, 0x742c2c58, 0x2e1a1a34, 0x2d1b1b36, 0xb26e6edc,
     0xee5a5ab4, 0xfba0a05b, 0xf65252a4, 0x4d3b3b76, 0x61d6d6b7,
     0xceb3b37d, 0x7b292952, 0x3ee3e3dd, 0x712f2f5e, 0x97848413,
     0xf55353a6, 0x68d1d1b9, 0x00000000, 0x2cededc1, 0x60202040,
     0x1ffcfce3, 0xc8b1b179, 0xed5b5bb6, 0xbe6a6ad4, 0x46cbcb8d,
     0xd9bebe67, 0x4b393972, 0xde4a4a94, 0xd44c4c98, 0xe85858b0,
     0x4acfcf85, 0x6bd0d0bb, 0x2aefefc5, 0xe5aaaa4f, 0x16fbfbed,
     0xc5434386, 0xd74d4d9a, 0x55333366, 0x94858511, 0xcf45458a,
     0x10f9f9e9, 0x06020204, 0x817f7ffe, 0xf05050a0, 0x443c3c78,
     0xba9f9f25, 0xe3a8a84b, 0xf35151a2, 0xfea3a35d, 0xc0404080,
     0x8a8f8f05, 0xad92923f, 0xbc9d9d21, 0x48383870, 0x04f5f5f1,
     0xdfbcbc63, 0xc1b6b677, 0x75dadaaf, 0x63212142, 0x30101020,
     0x1affffe5, 0x0ef3f3fd, 0x6dd2d2bf, 0x4ccdcd81, 0x140c0c18,
     0x35131326, 0x2fececc3, 0xe15f5fbe, 0xa2979735, 0xcc444488,
     0x3917172e, 0x57c4c493, 0xf2a7a755, 0x827e7efc, 0x473d3d7a,
     0xac6464c8, 0xe75d5dba, 0x2b191932, 0x957373e6, 0xa06060c0,
     0x98818119, 0xd14f4f9e, 0x7fdcdca3, 0x66222244, 0x7e2a2a54,
     0xab90903b, 0x8388880b, 0xca46468c, 0x29eeeec7, 0xd3b8b86b,
     0x3c141428, 0x79dedea7, 0xe25e5ebc, 0x1d0b0b16, 0x76dbdbad,
     0x3be0e0db, 0x56323264, 0x4e3a3a74, 0x1e0a0a14, 0xdb494992,
     0x0a06060c, 0x6c242448, 0xe45c5cb8, 0x5dc2c29f, 0x6ed3d3bd,
     0xefacac43, 0xa66262c4, 0xa8919139, 0xa4959531, 0x37e4e4d3,
     0x8b7979f2, 0x32e7e7d5, 0x43c8c88b, 0x5937376e, 0xb76d6dda,
     0x8c8d8d01, 0x64d5d5b1, 0xd24e4e9c, 0xe0a9a949, 0xb46c6cd8,
     0xfa5656ac, 0x07f4f4f3, 0x25eaeacf, 0xaf6565ca, 0x8e7a7af4,
     0xe9aeae47, 0x18080810, 0xd5baba6f, 0x887878f0, 0x6f25254a,
     0x722e2e5c, 0x241c1c38, 0xf1a6a657, 0xc7b4b473, 0x51c6c697,
     0x23e8e8cb, 0x7cdddda1, 0x9c7474e8, 0x211f1f3e, 0xdd4b4b96,
     0xdcbdbd61, 0x868b8b0d, 0x858a8a0f, 0x907070e0, 0x423e3e7c,
     0xc4b5b571, 0xaa6666cc, 0xd8484890, 0x05030306, 0x01f6f6f7,
     0x120e0e1c, 0xa36161c2, 0x5f35356a, 0xf95757ae, 0xd0b9b969,
     0x91868617, 0x58c1c199, 0x271d1d3a, 0xb99e9e27, 0x38e1e1d9,
     0x13f8f8eb, 0xb398982b, 0x33111122, 0xbb6969d2, 0x70d9d9a9,
     0x898e8e07, 0xa7949433, 0xb69b9b2d, 0x221e1e3c, 0x92878715,
     0x20e9e9c9, 0x49cece87, 0xff5555aa, 0x78282850, 0x7adfdfa5,
     0x8f8c8c03, 0xf8a1a159, 0x80898909, 0x170d0d1a, 0xdabfbf65,
     0x31e6e6d7, 0xc6424284, 0xb86868d0, 0xc3414182, 0xb0999929,
     0x772d2d5a, 0x110f0f1e, 0xcbb0b07b, 0xfc5454a8, 0xd6bbbb6d,
     0x3a16162c};

    private static final int[] T1 =
    {
     0x6363c6a5, 0x7c7cf884, 0x7777ee99, 0x7b7bf68d, 0xf2f2ff0d,
     0x6b6bd6bd, 0x6f6fdeb1, 0xc5c59154, 0x30306050, 0x01010203,
     0x6767cea9, 0x2b2b567d, 0xfefee719, 0xd7d7b562, 0xabab4de6,
     0x7676ec9a, 0xcaca8f45, 0x82821f9d, 0xc9c98940, 0x7d7dfa87,
     0xfafaef15, 0x5959b2eb, 0x47478ec9, 0xf0f0fb0b, 0xadad41ec,
     0xd4d4b367, 0xa2a25ffd, 0xafaf45ea, 0x9c9c23bf, 0xa4a453f7,
     0x7272e496, 0xc0c09b5b, 0xb7b775c2, 0xfdfde11c, 0x93933dae,
     0x26264c6a, 0x36366c5a, 0x3f3f7e41, 0xf7f7f502, 0xcccc834f,
     0x3434685c, 0xa5a551f4, 0xe5e5d134, 0xf1f1f908, 0x7171e293,
     0xd8d8ab73, 0x31316253, 0x15152a3f, 0x0404080c, 0xc7c79552,
     0x23234665, 0xc3c39d5e, 0x18183028, 0x969637a1, 0x05050a0f,
     0x9a9a2fb5, 0x07070e09, 0x12122436, 0x80801b9b, 0xe2e2df3d,
     0xebebcd26, 0x27274e69, 0xb2b27fcd, 0x7575ea9f, 0x0909121b,
     0x83831d9e, 0x2c2c5874, 0x1a1a342e, 0x1b1b362d, 0x6e6edcb2,
     0x5a5ab4ee, 0xa0a05bfb, 0x5252a4f6, 0x3b3b764d, 0xd6d6b761,
     0xb3b37dce, 0x2929527b, 0xe3e3dd3e, 0x2f2f5e71, 0x84841397,
     0x5353a6f5, 0xd1d1b968, 0x00000000, 0xededc12c, 0x20204060,
     0xfcfce31f, 0xb1b179c8, 0x5b5bb6ed, 0x6a6ad4be, 0xcbcb8d46,
     0xbebe67d9, 0x3939724b, 0x4a4a94de, 0x4c4c98d4, 0x5858b0e8,
     0xcfcf854a, 0xd0d0bb6b, 0xefefc52a, 0xaaaa4fe5, 0xfbfbed16,
     0x434386c5, 0x4d4d9ad7, 0x33336655, 0x85851194, 0x45458acf,
     0xf9f9e910, 0x02020406, 0x7f7ffe81, 0x5050a0f0, 0x3c3c7844,
     0x9f9f25ba, 0xa8a84be3, 0x5151a2f3, 0xa3a35dfe, 0x404080c0,
     0x8f8f058a, 0x92923fad, 0x9d9d21bc, 0x38387048, 0xf5f5f104,
     0xbcbc63df, 0xb6b677c1, 0xdadaaf75, 0x21214263, 0x10102030,
     0xffffe51a, 0xf3f3fd0e, 0xd2d2bf6d, 0xcdcd814c, 0x0c0c1814,
     0x13132635, 0xececc32f, 0x5f5fbee1, 0x979735a2, 0x444488cc,
     0x17172e39, 0xc4c49357, 0xa7a755f2, 0x7e7efc82, 0x3d3d7a47,
     0x6464c8ac, 0x5d5dbae7, 0x1919322b, 0x7373e695, 0x6060c0a0,
     0x81811998, 0x4f4f9ed1, 0xdcdca37f, 0x22224466, 0x2a2a547e,
     0x90903bab, 0x88880b83, 0x46468cca, 0xeeeec729, 0xb8b86bd3,
     0x1414283c, 0xdedea779, 0x5e5ebce2, 0x0b0b161d, 0xdbdbad76,
     0xe0e0db3b, 0x32326456, 0x3a3a744e, 0x0a0a141e, 0x494992db,
     0x06060c0a, 0x2424486c, 0x5c5cb8e4, 0xc2c29f5d, 0xd3d3bd6e,
     0xacac43ef, 0x6262c4a6, 0x919139a8, 0x959531a4, 0xe4e4d337,
     0x7979f28b, 0xe7e7d532, 0xc8c88b43, 0x37376e59, 0x6d6ddab7,
     0x8d8d018c, 0xd5d5b164, 0x4e4e9cd2, 0xa9a949e0, 0x6c6cd8b4,
     0x5656acfa, 0xf4f4f307, 0xeaeacf25, 0x6565caaf, 0x7a7af48e,
     0xaeae47e9, 0x08081018, 0xbaba6fd5, 0x7878f088, 0x25254a6f,
     0x2e2e5c72, 0x1c1c3824, 0xa6a657f1, 0xb4b473c7, 0xc6c69751,
     0xe8e8cb23, 0xdddda17c, 0x7474e89c, 0x1f1f3e21, 0x4b4b96dd,
     0xbdbd61dc, 0x8b8b0d86, 0x8a8a0f85, 0x7070e090, 0x3e3e7c42,
     0xb5b571c4, 0x6666ccaa, 0x484890d8, 0x03030605, 0xf6f6f701,
     0x0e0e1c12, 0x6161c2a3, 0x35356a5f, 0x5757aef9, 0xb9b969d0,
     0x86861791, 0xc1c19958, 0x1d1d3a27, 0x9e9e27b9, 0xe1e1d938,
     0xf8f8eb13, 0x98982bb3, 0x11112233, 0x6969d2bb, 0xd9d9a970,
     0x8e8e0789, 0x949433a7, 0x9b9b2db6, 0x1e1e3c22, 0x87871592,
     0xe9e9c920, 0xcece8749, 0x5555aaff, 0x28285078, 0xdfdfa57a,
     0x8c8c038f, 0xa1a159f8, 0x89890980, 0x0d0d1a17, 0xbfbf65da,
     0xe6e6d731, 0x424284c6, 0x6868d0b8, 0x414182c3, 0x999929b0,
     0x2d2d5a77, 0x0f0f1e11, 0xb0b07bcb, 0x5454a8fc, 0xbbbb6dd6,
     0x16162c3a};

    private static final int[] T2 =
    {
     0x63c6a563, 0x7cf8847c, 0x77ee9977, 0x7bf68d7b, 0xf2ff0df2,
     0x6bd6bd6b, 0x6fdeb16f, 0xc59154c5, 0x30605030, 0x01020301,
     0x67cea967, 0x2b567d2b, 0xfee719fe, 0xd7b562d7, 0xab4de6ab,
     0x76ec9a76, 0xca8f45ca, 0x821f9d82, 0xc98940c9, 0x7dfa877d,
     0xfaef15fa, 0x59b2eb59, 0x478ec947, 0xf0fb0bf0, 0xad41ecad,
     0xd4b367d4, 0xa25ffda2, 0xaf45eaaf, 0x9c23bf9c, 0xa453f7a4,
     0x72e49672, 0xc09b5bc0, 0xb775c2b7, 0xfde11cfd, 0x933dae93,
     0x264c6a26, 0x366c5a36, 0x3f7e413f, 0xf7f502f7, 0xcc834fcc,
     0x34685c34, 0xa551f4a5, 0xe5d134e5, 0xf1f908f1, 0x71e29371,
     0xd8ab73d8, 0x31625331, 0x152a3f15, 0x04080c04, 0xc79552c7,
     0x23466523, 0xc39d5ec3, 0x18302818, 0x9637a196, 0x050a0f05,
     0x9a2fb59a, 0x070e0907, 0x12243612, 0x801b9b80, 0xe2df3de2,
     0xebcd26eb, 0x274e6927, 0xb27fcdb2, 0x75ea9f75, 0x09121b09,
     0x831d9e83, 0x2c58742c, 0x1a342e1a, 0x1b362d1b, 0x6edcb26e,
     0x5ab4ee5a, 0xa05bfba0, 0x52a4f652, 0x3b764d3b, 0xd6b761d6,
     0xb37dceb3, 0x29527b29, 0xe3dd3ee3, 0x2f5e712f, 0x84139784,
     0x53a6f553, 0xd1b968d1, 0x00000000, 0xedc12ced, 0x20406020,
     0xfce31ffc, 0xb179c8b1, 0x5bb6ed5b, 0x6ad4be6a, 0xcb8d46cb,
     0xbe67d9be, 0x39724b39, 0x4a94de4a, 0x4c98d44c, 0x58b0e858,
     0xcf854acf, 0xd0bb6bd0, 0xefc52aef, 0xaa4fe5aa, 0xfbed16fb,
     0x4386c543, 0x4d9ad74d, 0x33665533, 0x85119485, 0x458acf45,
     0xf9e910f9, 0x02040602, 0x7ffe817f, 0x50a0f050, 0x3c78443c,
     0x9f25ba9f, 0xa84be3a8, 0x51a2f351, 0xa35dfea3, 0x4080c040,
     0x8f058a8f, 0x923fad92, 0x9d21bc9d, 0x38704838, 0xf5f104f5,
     0xbc63dfbc, 0xb677c1b6, 0xdaaf75da, 0x21426321, 0x10203010,
     0xffe51aff, 0xf3fd0ef3, 0xd2bf6dd2, 0xcd814ccd, 0x0c18140c,
     0x13263513, 0xecc32fec, 0x5fbee15f, 0x9735a297, 0x4488cc44,
     0x172e3917, 0xc49357c4, 0xa755f2a7, 0x7efc827e, 0x3d7a473d,
     0x64c8ac64, 0x5dbae75d, 0x19322b19, 0x73e69573, 0x60c0a060,
     0x81199881, 0x4f9ed14f, 0xdca37fdc, 0x22446622, 0x2a547e2a,
     0x903bab90, 0x880b8388, 0x468cca46, 0xeec729ee, 0xb86bd3b8,
     0x14283c14, 0xdea779de, 0x5ebce25e, 0x0b161d0b, 0xdbad76db,
     0xe0db3be0, 0x32645632, 0x3a744e3a, 0x0a141e0a, 0x4992db49,
     0x060c0a06, 0x24486c24, 0x5cb8e45c, 0xc29f5dc2, 0xd3bd6ed3,
     0xac43efac, 0x62c4a662, 0x9139a891, 0x9531a495, 0xe4d337e4,
     0x79f28b79, 0xe7d532e7, 0xc88b43c8, 0x376e5937, 0x6ddab76d,
     0x8d018c8d, 0xd5b164d5, 0x4e9cd24e, 0xa949e0a9, 0x6cd8b46c,
     0x56acfa56, 0xf4f307f4, 0xeacf25ea, 0x65caaf65, 0x7af48e7a,
     0xae47e9ae, 0x08101808, 0xba6fd5ba, 0x78f08878, 0x254a6f25,
     0x2e5c722e, 0x1c38241c, 0xa657f1a6, 0xb473c7b4, 0xc69751c6,
     0xe8cb23e8, 0xdda17cdd, 0x74e89c74, 0x1f3e211f, 0x4b96dd4b,
     0xbd61dcbd, 0x8b0d868b, 0x8a0f858a, 0x70e09070, 0x3e7c423e,
     0xb571c4b5, 0x66ccaa66, 0x4890d848, 0x03060503, 0xf6f701f6,
     0x0e1c120e, 0x61c2a361, 0x356a5f35, 0x57aef957, 0xb969d0b9,
     0x86179186, 0xc19958c1, 0x1d3a271d, 0x9e27b99e, 0xe1d938e1,
     0xf8eb13f8, 0x982bb398, 0x11223311, 0x69d2bb69, 0xd9a970d9,
     0x8e07898e, 0x9433a794, 0x9b2db69b, 0x1e3c221e, 0x87159287,
     0xe9c920e9, 0xce8749ce, 0x55aaff55, 0x28507828, 0xdfa57adf,
     0x8c038f8c, 0xa159f8a1, 0x89098089, 0x0d1a170d, 0xbf65dabf,
     0xe6d731e6, 0x4284c642, 0x68d0b868, 0x4182c341, 0x9929b099,
     0x2d5a772d, 0x0f1e110f, 0xb07bcbb0, 0x54a8fc54, 0xbb6dd6bb,
     0x162c3a16};

    private static final int[] T3 =
    {
     0xc6a56363, 0xf8847c7c, 0xee997777, 0xf68d7b7b, 0xff0df2f2,
     0xd6bd6b6b, 0xdeb16f6f, 0x9154c5c5, 0x60503030, 0x02030101,
     0xcea96767, 0x567d2b2b, 0xe719fefe, 0xb562d7d7, 0x4de6abab,
     0xec9a7676, 0x8f45caca, 0x1f9d8282, 0x8940c9c9, 0xfa877d7d,
     0xef15fafa, 0xb2eb5959, 0x8ec94747, 0xfb0bf0f0, 0x41ecadad,
     0xb367d4d4, 0x5ffda2a2, 0x45eaafaf, 0x23bf9c9c, 0x53f7a4a4,
     0xe4967272, 0x9b5bc0c0, 0x75c2b7b7, 0xe11cfdfd, 0x3dae9393,
     0x4c6a2626, 0x6c5a3636, 0x7e413f3f, 0xf502f7f7, 0x834fcccc,
     0x685c3434, 0x51f4a5a5, 0xd134e5e5, 0xf908f1f1, 0xe2937171,
     0xab73d8d8, 0x62533131, 0x2a3f1515, 0x080c0404, 0x9552c7c7,
     0x46652323, 0x9d5ec3c3, 0x30281818, 0x37a19696, 0x0a0f0505,
     0x2fb59a9a, 0x0e090707, 0x24361212, 0x1b9b8080, 0xdf3de2e2,
     0xcd26ebeb, 0x4e692727, 0x7fcdb2b2, 0xea9f7575, 0x121b0909,
     0x1d9e8383, 0x58742c2c, 0x342e1a1a, 0x362d1b1b, 0xdcb26e6e,
     0xb4ee5a5a, 0x5bfba0a0, 0xa4f65252, 0x764d3b3b, 0xb761d6d6,
     0x7dceb3b3, 0x527b2929, 0xdd3ee3e3, 0x5e712f2f, 0x13978484,
     0xa6f55353, 0xb968d1d1, 0x00000000, 0xc12ceded, 0x40602020,
     0xe31ffcfc, 0x79c8b1b1, 0xb6ed5b5b, 0xd4be6a6a, 0x8d46cbcb,
     0x67d9bebe, 0x724b3939, 0x94de4a4a, 0x98d44c4c, 0xb0e85858,
     0x854acfcf, 0xbb6bd0d0, 0xc52aefef, 0x4fe5aaaa, 0xed16fbfb,
     0x86c54343, 0x9ad74d4d, 0x66553333, 0x11948585, 0x8acf4545,
     0xe910f9f9, 0x04060202, 0xfe817f7f, 0xa0f05050, 0x78443c3c,
     0x25ba9f9f, 0x4be3a8a8, 0xa2f35151, 0x5dfea3a3, 0x80c04040,
     0x058a8f8f, 0x3fad9292, 0x21bc9d9d, 0x70483838, 0xf104f5f5,
     0x63dfbcbc, 0x77c1b6b6, 0xaf75dada, 0x42632121, 0x20301010,
     0xe51affff, 0xfd0ef3f3, 0xbf6dd2d2, 0x814ccdcd, 0x18140c0c,
     0x26351313, 0xc32fecec, 0xbee15f5f, 0x35a29797, 0x88cc4444,
     0x2e391717, 0x9357c4c4, 0x55f2a7a7, 0xfc827e7e, 0x7a473d3d,
     0xc8ac6464, 0xbae75d5d, 0x322b1919, 0xe6957373, 0xc0a06060,
     0x19988181, 0x9ed14f4f, 0xa37fdcdc, 0x44662222, 0x547e2a2a,
     0x3bab9090, 0x0b838888, 0x8cca4646, 0xc729eeee, 0x6bd3b8b8,
     0x283c1414, 0xa779dede, 0xbce25e5e, 0x161d0b0b, 0xad76dbdb,
     0xdb3be0e0, 0x64563232, 0x744e3a3a, 0x141e0a0a, 0x92db4949,
     0x0c0a0606, 0x486c2424, 0xb8e45c5c, 0x9f5dc2c2, 0xbd6ed3d3,
     0x43efacac, 0xc4a66262, 0x39a89191, 0x31a49595, 0xd337e4e4,
     0xf28b7979, 0xd532e7e7, 0x8b43c8c8, 0x6e593737, 0xdab76d6d,
     0x018c8d8d, 0xb164d5d5, 0x9cd24e4e, 0x49e0a9a9, 0xd8b46c6c,
     0xacfa5656, 0xf307f4f4, 0xcf25eaea, 0xcaaf6565, 0xf48e7a7a,
     0x47e9aeae, 0x10180808, 0x6fd5baba, 0xf0887878, 0x4a6f2525,
     0x5c722e2e, 0x38241c1c, 0x57f1a6a6, 0x73c7b4b4, 0x9751c6c6,
     0xcb23e8e8, 0xa17cdddd, 0xe89c7474, 0x3e211f1f, 0x96dd4b4b,
     0x61dcbdbd, 0x0d868b8b, 0x0f858a8a, 0xe0907070, 0x7c423e3e,
     0x71c4b5b5, 0xccaa6666, 0x90d84848, 0x06050303, 0xf701f6f6,
     0x1c120e0e, 0xc2a36161, 0x6a5f3535, 0xaef95757, 0x69d0b9b9,
     0x17918686, 0x9958c1c1, 0x3a271d1d, 0x27b99e9e, 0xd938e1e1,
     0xeb13f8f8, 0x2bb39898, 0x22331111, 0xd2bb6969, 0xa970d9d9,
     0x07898e8e, 0x33a79494, 0x2db69b9b, 0x3c221e1e, 0x15928787,
     0xc920e9e9, 0x8749cece, 0xaaff5555, 0x50782828, 0xa57adfdf,
     0x038f8c8c, 0x59f8a1a1, 0x09808989, 0x1a170d0d, 0x65dabfbf,
     0xd731e6e6, 0x84c64242, 0xd0b86868, 0x82c34141, 0x29b09999,
     0x5a772d2d, 0x1e110f0f, 0x7bcbb0b0, 0xa8fc5454, 0x6dd6bbbb,
     0x2c3a1616};

    private static final int[] Tinv0 =
    {
     0x50a7f451, 0x5365417e, 0xc3a4171a, 0x965e273a, 0xcb6bab3b,
     0xf1459d1f, 0xab58faac, 0x9303e34b, 0x55fa3020, 0xf66d76ad,
     0x9176cc88, 0x254c02f5, 0xfcd7e54f, 0xd7cb2ac5, 0x80443526,
     0x8fa362b5, 0x495ab1de, 0x671bba25, 0x980eea45, 0xe1c0fe5d,
     0x02752fc3, 0x12f04c81, 0xa397468d, 0xc6f9d36b, 0xe75f8f03,
     0x959c9215, 0xeb7a6dbf, 0xda595295, 0x2d83bed4, 0xd3217458,
     0x2969e049, 0x44c8c98e, 0x6a89c275, 0x78798ef4, 0x6b3e5899,
     0xdd71b927, 0xb64fe1be, 0x17ad88f0, 0x66ac20c9, 0xb43ace7d,
     0x184adf63, 0x82311ae5, 0x60335197, 0x457f5362, 0xe07764b1,
     0x84ae6bbb, 0x1ca081fe, 0x942b08f9, 0x58684870, 0x19fd458f,
     0x876cde94, 0xb7f87b52, 0x23d373ab, 0xe2024b72, 0x578f1fe3,
     0x2aab5566, 0x0728ebb2, 0x03c2b52f, 0x9a7bc586, 0xa50837d3,
     0xf2872830, 0xb2a5bf23, 0xba6a0302, 0x5c8216ed, 0x2b1ccf8a,
     0x92b479a7, 0xf0f207f3, 0xa1e2694e, 0xcdf4da65, 0xd5be0506,
     0x1f6234d1, 0x8afea6c4, 0x9d532e34, 0xa055f3a2, 0x32e18a05,
     0x75ebf6a4, 0x39ec830b, 0xaaef6040, 0x069f715e, 0x51106ebd,
     0xf98a213e, 0x3d06dd96, 0xae053edd, 0x46bde64d, 0xb58d5491,
     0x055dc471, 0x6fd40604, 0xff155060, 0x24fb9819, 0x97e9bdd6,
     0xcc434089, 0x779ed967, 0xbd42e8b0, 0x888b8907, 0x385b19e7,
     0xdbeec879, 0x470a7ca1, 0xe90f427c, 0xc91e84f8, 0x00000000,
     0x83868009, 0x48ed2b32, 0xac70111e, 0x4e725a6c, 0xfbff0efd,
     0x5638850f, 0x1ed5ae3d, 0x27392d36, 0x64d90f0a, 0x21a65c68,
     0xd1545b9b, 0x3a2e3624, 0xb1670a0c, 0x0fe75793, 0xd296eeb4,
     0x9e919b1b, 0x4fc5c080, 0xa220dc61, 0x694b775a, 0x161a121c,
     0x0aba93e2, 0xe52aa0c0, 0x43e0223c, 0x1d171b12, 0x0b0d090e,
     0xadc78bf2, 0xb9a8b62d, 0xc8a91e14, 0x8519f157, 0x4c0775af,
     0xbbdd99ee, 0xfd607fa3, 0x9f2601f7, 0xbcf5725c, 0xc53b6644,
     0x347efb5b, 0x7629438b, 0xdcc623cb, 0x68fcedb6, 0x63f1e4b8,
     0xcadc31d7, 0x10856342, 0x40229713, 0x2011c684, 0x7d244a85,
     0xf83dbbd2, 0x1132f9ae, 0x6da129c7, 0x4b2f9e1d, 0xf330b2dc,
     0xec52860d, 0xd0e3c177, 0x6c16b32b, 0x99b970a9, 0xfa489411,
     0x2264e947, 0xc48cfca8, 0x1a3ff0a0, 0xd82c7d56, 0xef903322,
     0xc74e4987, 0xc1d138d9, 0xfea2ca8c, 0x360bd498, 0xcf81f5a6,
     0x28de7aa5, 0x268eb7da, 0xa4bfad3f, 0xe49d3a2c, 0x0d927850,
     0x9bcc5f6a, 0x62467e54, 0xc2138df6, 0xe8b8d890, 0x5ef7392e,
     0xf5afc382, 0xbe805d9f, 0x7c93d069, 0xa92dd56f, 0xb31225cf,
     0x3b99acc8, 0xa77d1810, 0x6e639ce8, 0x7bbb3bdb, 0x097826cd,
     0xf418596e, 0x01b79aec, 0xa89a4f83, 0x656e95e6, 0x7ee6ffaa,
     0x08cfbc21, 0xe6e815ef, 0xd99be7ba, 0xce366f4a, 0xd4099fea,
     0xd67cb029, 0xafb2a431, 0x31233f2a, 0x3094a5c6, 0xc066a235,
     0x37bc4e74, 0xa6ca82fc, 0xb0d090e0, 0x15d8a733, 0x4a9804f1,
     0xf7daec41, 0x0e50cd7f, 0x2ff69117, 0x8dd64d76, 0x4db0ef43,
     0x544daacc, 0xdf0496e4, 0xe3b5d19e, 0x1b886a4c, 0xb81f2cc1,
     0x7f516546, 0x04ea5e9d, 0x5d358c01, 0x737487fa, 0x2e410bfb,
     0x5a1d67b3, 0x52d2db92, 0x335610e9, 0x1347d66d, 0x8c61d79a,
     0x7a0ca137, 0x8e14f859, 0x893c13eb, 0xee27a9ce, 0x35c961b7,
     0xede51ce1, 0x3cb1477a, 0x59dfd29c, 0x3f73f255, 0x79ce1418,
     0xbf37c773, 0xeacdf753, 0x5baafd5f, 0x146f3ddf, 0x86db4478,
     0x81f3afca, 0x3ec468b9, 0x2c342438, 0x5f40a3c2, 0x72c31d16,
     0x0c25e2bc, 0x8b493c28, 0x41950dff, 0x7101a839, 0xdeb30c08,
     0x9ce4b4d8, 0x90c15664, 0x6184cb7b, 0x70b632d5, 0x745c6c48,
     0x4257b8d0};

    private static final int[] Tinv1 =
    {
     0xa7f45150, 0x65417e53, 0xa4171ac3, 0x5e273a96, 0x6bab3bcb,
     0x459d1ff1, 0x58faacab, 0x03e34b93, 0xfa302055, 0x6d76adf6,
     0x76cc8891, 0x4c02f525, 0xd7e54ffc, 0xcb2ac5d7, 0x44352680,
     0xa362b58f, 0x5ab1de49, 0x1bba2567, 0x0eea4598, 0xc0fe5de1,
     0x752fc302, 0xf04c8112, 0x97468da3, 0xf9d36bc6, 0x5f8f03e7,
     0x9c921595, 0x7a6dbfeb, 0x595295da, 0x83bed42d, 0x217458d3,
     0x69e04929, 0xc8c98e44, 0x89c2756a, 0x798ef478, 0x3e58996b,
     0x71b927dd, 0x4fe1beb6, 0xad88f017, 0xac20c966, 0x3ace7db4,
     0x4adf6318, 0x311ae582, 0x33519760, 0x7f536245, 0x7764b1e0,
     0xae6bbb84, 0xa081fe1c, 0x2b08f994, 0x68487058, 0xfd458f19,
     0x6cde9487, 0xf87b52b7, 0xd373ab23, 0x024b72e2, 0x8f1fe357,
     0xab55662a, 0x28ebb207, 0xc2b52f03, 0x7bc5869a, 0x0837d3a5,
     0x872830f2, 0xa5bf23b2, 0x6a0302ba, 0x8216ed5c, 0x1ccf8a2b,
     0xb479a792, 0xf207f3f0, 0xe2694ea1, 0xf4da65cd, 0xbe0506d5,
     0x6234d11f, 0xfea6c48a, 0x532e349d, 0x55f3a2a0, 0xe18a0532,
     0xebf6a475, 0xec830b39, 0xef6040aa, 0x9f715e06, 0x106ebd51,
     0x8a213ef9, 0x06dd963d, 0x053eddae, 0xbde64d46, 0x8d5491b5,
     0x5dc47105, 0xd406046f, 0x155060ff, 0xfb981924, 0xe9bdd697,
     0x434089cc, 0x9ed96777, 0x42e8b0bd, 0x8b890788, 0x5b19e738,
     0xeec879db, 0x0a7ca147, 0x0f427ce9, 0x1e84f8c9, 0x00000000,
     0x86800983, 0xed2b3248, 0x70111eac, 0x725a6c4e, 0xff0efdfb,
     0x38850f56, 0xd5ae3d1e, 0x392d3627, 0xd90f0a64, 0xa65c6821,
     0x545b9bd1, 0x2e36243a, 0x670a0cb1, 0xe757930f, 0x96eeb4d2,
     0x919b1b9e, 0xc5c0804f, 0x20dc61a2, 0x4b775a69, 0x1a121c16,
     0xba93e20a, 0x2aa0c0e5, 0xe0223c43, 0x171b121d, 0x0d090e0b,
     0xc78bf2ad, 0xa8b62db9, 0xa91e14c8, 0x19f15785, 0x0775af4c,
     0xdd99eebb, 0x607fa3fd, 0x2601f79f, 0xf5725cbc, 0x3b6644c5,
     0x7efb5b34, 0x29438b76, 0xc623cbdc, 0xfcedb668, 0xf1e4b863,
     0xdc31d7ca, 0x85634210, 0x22971340, 0x11c68420, 0x244a857d,
     0x3dbbd2f8, 0x32f9ae11, 0xa129c76d, 0x2f9e1d4b, 0x30b2dcf3,
     0x52860dec, 0xe3c177d0, 0x16b32b6c, 0xb970a999, 0x489411fa,
     0x64e94722, 0x8cfca8c4, 0x3ff0a01a, 0x2c7d56d8, 0x903322ef,
     0x4e4987c7, 0xd138d9c1, 0xa2ca8cfe, 0x0bd49836, 0x81f5a6cf,
     0xde7aa528, 0x8eb7da26, 0xbfad3fa4, 0x9d3a2ce4, 0x9278500d,
     0xcc5f6a9b, 0x467e5462, 0x138df6c2, 0xb8d890e8, 0xf7392e5e,
     0xafc382f5, 0x805d9fbe, 0x93d0697c, 0x2dd56fa9, 0x1225cfb3,
     0x99acc83b, 0x7d1810a7, 0x639ce86e, 0xbb3bdb7b, 0x7826cd09,
     0x18596ef4, 0xb79aec01, 0x9a4f83a8, 0x6e95e665, 0xe6ffaa7e,
     0xcfbc2108, 0xe815efe6, 0x9be7bad9, 0x366f4ace, 0x099fead4,
     0x7cb029d6, 0xb2a431af, 0x233f2a31, 0x94a5c630, 0x66a235c0,
     0xbc4e7437, 0xca82fca6, 0xd090e0b0, 0xd8a73315, 0x9804f14a,
     0xdaec41f7, 0x50cd7f0e, 0xf691172f, 0xd64d768d, 0xb0ef434d,
     0x4daacc54, 0x0496e4df, 0xb5d19ee3, 0x886a4c1b, 0x1f2cc1b8,
     0x5165467f, 0xea5e9d04, 0x358c015d, 0x7487fa73, 0x410bfb2e,
     0x1d67b35a, 0xd2db9252, 0x5610e933, 0x47d66d13, 0x61d79a8c,
     0x0ca1377a, 0x14f8598e, 0x3c13eb89, 0x27a9ceee, 0xc961b735,
     0xe51ce1ed, 0xb1477a3c, 0xdfd29c59, 0x73f2553f, 0xce141879,
     0x37c773bf, 0xcdf753ea, 0xaafd5f5b, 0x6f3ddf14, 0xdb447886,
     0xf3afca81, 0xc468b93e, 0x3424382c, 0x40a3c25f, 0xc31d1672,
     0x25e2bc0c, 0x493c288b, 0x950dff41, 0x01a83971, 0xb30c08de,
     0xe4b4d89c, 0xc1566490, 0x84cb7b61, 0xb632d570, 0x5c6c4874,
     0x57b8d042};

    private static final int[] Tinv2 =
    {
     0xf45150a7, 0x417e5365, 0x171ac3a4, 0x273a965e, 0xab3bcb6b,
     0x9d1ff145, 0xfaacab58, 0xe34b9303, 0x302055fa, 0x76adf66d,
     0xcc889176, 0x02f5254c, 0xe54ffcd7, 0x2ac5d7cb, 0x35268044,
     0x62b58fa3, 0xb1de495a, 0xba25671b, 0xea45980e, 0xfe5de1c0,
     0x2fc30275, 0x4c8112f0, 0x468da397, 0xd36bc6f9, 0x8f03e75f,
     0x9215959c, 0x6dbfeb7a, 0x5295da59, 0xbed42d83, 0x7458d321,
     0xe0492969, 0xc98e44c8, 0xc2756a89, 0x8ef47879, 0x58996b3e,
     0xb927dd71, 0xe1beb64f, 0x88f017ad, 0x20c966ac, 0xce7db43a,
     0xdf63184a, 0x1ae58231, 0x51976033, 0x5362457f, 0x64b1e077,
     0x6bbb84ae, 0x81fe1ca0, 0x08f9942b, 0x48705868, 0x458f19fd,
     0xde94876c, 0x7b52b7f8, 0x73ab23d3, 0x4b72e202, 0x1fe3578f,
     0x55662aab, 0xebb20728, 0xb52f03c2, 0xc5869a7b, 0x37d3a508,
     0x2830f287, 0xbf23b2a5, 0x0302ba6a, 0x16ed5c82, 0xcf8a2b1c,
     0x79a792b4, 0x07f3f0f2, 0x694ea1e2, 0xda65cdf4, 0x0506d5be,
     0x34d11f62, 0xa6c48afe, 0x2e349d53, 0xf3a2a055, 0x8a0532e1,
     0xf6a475eb, 0x830b39ec, 0x6040aaef, 0x715e069f, 0x6ebd5110,
     0x213ef98a, 0xdd963d06, 0x3eddae05, 0xe64d46bd, 0x5491b58d,
     0xc471055d, 0x06046fd4, 0x5060ff15, 0x981924fb, 0xbdd697e9,
     0x4089cc43, 0xd967779e, 0xe8b0bd42, 0x8907888b, 0x19e7385b,
     0xc879dbee, 0x7ca1470a, 0x427ce90f, 0x84f8c91e, 0x00000000,
     0x80098386, 0x2b3248ed, 0x111eac70, 0x5a6c4e72, 0x0efdfbff,
     0x850f5638, 0xae3d1ed5, 0x2d362739, 0x0f0a64d9, 0x5c6821a6,
     0x5b9bd154, 0x36243a2e, 0x0a0cb167, 0x57930fe7, 0xeeb4d296,
     0x9b1b9e91, 0xc0804fc5, 0xdc61a220, 0x775a694b, 0x121c161a,
     0x93e20aba, 0xa0c0e52a, 0x223c43e0, 0x1b121d17, 0x090e0b0d,
     0x8bf2adc7, 0xb62db9a8, 0x1e14c8a9, 0xf1578519, 0x75af4c07,
     0x99eebbdd, 0x7fa3fd60, 0x01f79f26, 0x725cbcf5, 0x6644c53b,
     0xfb5b347e, 0x438b7629, 0x23cbdcc6, 0xedb668fc, 0xe4b863f1,
     0x31d7cadc, 0x63421085, 0x97134022, 0xc6842011, 0x4a857d24,
     0xbbd2f83d, 0xf9ae1132, 0x29c76da1, 0x9e1d4b2f, 0xb2dcf330,
     0x860dec52, 0xc177d0e3, 0xb32b6c16, 0x70a999b9, 0x9411fa48,
     0xe9472264, 0xfca8c48c, 0xf0a01a3f, 0x7d56d82c, 0x3322ef90,
     0x4987c74e, 0x38d9c1d1, 0xca8cfea2, 0xd498360b, 0xf5a6cf81,
     0x7aa528de, 0xb7da268e, 0xad3fa4bf, 0x3a2ce49d, 0x78500d92,
     0x5f6a9bcc, 0x7e546246, 0x8df6c213, 0xd890e8b8, 0x392e5ef7,
     0xc382f5af, 0x5d9fbe80, 0xd0697c93, 0xd56fa92d, 0x25cfb312,
     0xacc83b99, 0x1810a77d, 0x9ce86e63, 0x3bdb7bbb, 0x26cd0978,
     0x596ef418, 0x9aec01b7, 0x4f83a89a, 0x95e6656e, 0xffaa7ee6,
     0xbc2108cf, 0x15efe6e8, 0xe7bad99b, 0x6f4ace36, 0x9fead409,
     0xb029d67c, 0xa431afb2, 0x3f2a3123, 0xa5c63094, 0xa235c066,
     0x4e7437bc, 0x82fca6ca, 0x90e0b0d0, 0xa73315d8, 0x04f14a98,
     0xec41f7da, 0xcd7f0e50, 0x91172ff6, 0x4d768dd6, 0xef434db0,
     0xaacc544d, 0x96e4df04, 0xd19ee3b5, 0x6a4c1b88, 0x2cc1b81f,
     0x65467f51, 0x5e9d04ea, 0x8c015d35, 0x87fa7374, 0x0bfb2e41,
     0x67b35a1d, 0xdb9252d2, 0x10e93356, 0xd66d1347, 0xd79a8c61,
     0xa1377a0c, 0xf8598e14, 0x13eb893c, 0xa9ceee27, 0x61b735c9,
     0x1ce1ede5, 0x477a3cb1, 0xd29c59df, 0xf2553f73, 0x141879ce,
     0xc773bf37, 0xf753eacd, 0xfd5f5baa, 0x3ddf146f, 0x447886db,
     0xafca81f3, 0x68b93ec4, 0x24382c34, 0xa3c25f40, 0x1d1672c3,
     0xe2bc0c25, 0x3c288b49, 0x0dff4195, 0xa8397101, 0x0c08deb3,
     0xb4d89ce4, 0x566490c1, 0xcb7b6184, 0x32d570b6, 0x6c48745c,
     0xb8d04257};

    private static final int[] Tinv3 =
    {
     0x5150a7f4, 0x7e536541, 0x1ac3a417, 0x3a965e27, 0x3bcb6bab,
     0x1ff1459d, 0xacab58fa, 0x4b9303e3, 0x2055fa30, 0xadf66d76,
     0x889176cc, 0xf5254c02, 0x4ffcd7e5, 0xc5d7cb2a, 0x26804435,
     0xb58fa362, 0xde495ab1, 0x25671bba, 0x45980eea, 0x5de1c0fe,
     0xc302752f, 0x8112f04c, 0x8da39746, 0x6bc6f9d3, 0x03e75f8f,
     0x15959c92, 0xbfeb7a6d, 0x95da5952, 0xd42d83be, 0x58d32174,
     0x492969e0, 0x8e44c8c9, 0x756a89c2, 0xf478798e, 0x996b3e58,
     0x27dd71b9, 0xbeb64fe1, 0xf017ad88, 0xc966ac20, 0x7db43ace,
     0x63184adf, 0xe582311a, 0x97603351, 0x62457f53, 0xb1e07764,
     0xbb84ae6b, 0xfe1ca081, 0xf9942b08, 0x70586848, 0x8f19fd45,
     0x94876cde, 0x52b7f87b, 0xab23d373, 0x72e2024b, 0xe3578f1f,
     0x662aab55, 0xb20728eb, 0x2f03c2b5, 0x869a7bc5, 0xd3a50837,
     0x30f28728, 0x23b2a5bf, 0x02ba6a03, 0xed5c8216, 0x8a2b1ccf,
     0xa792b479, 0xf3f0f207, 0x4ea1e269, 0x65cdf4da, 0x06d5be05,
     0xd11f6234, 0xc48afea6, 0x349d532e, 0xa2a055f3, 0x0532e18a,
     0xa475ebf6, 0x0b39ec83, 0x40aaef60, 0x5e069f71, 0xbd51106e,
     0x3ef98a21, 0x963d06dd, 0xddae053e, 0x4d46bde6, 0x91b58d54,
     0x71055dc4, 0x046fd406, 0x60ff1550, 0x1924fb98, 0xd697e9bd,
     0x89cc4340, 0x67779ed9, 0xb0bd42e8, 0x07888b89, 0xe7385b19,
     0x79dbeec8, 0xa1470a7c, 0x7ce90f42, 0xf8c91e84, 0x00000000,
     0x09838680, 0x3248ed2b, 0x1eac7011, 0x6c4e725a, 0xfdfbff0e,
     0x0f563885, 0x3d1ed5ae, 0x3627392d, 0x0a64d90f, 0x6821a65c,
     0x9bd1545b, 0x243a2e36, 0x0cb1670a, 0x930fe757, 0xb4d296ee,
     0x1b9e919b, 0x804fc5c0, 0x61a220dc, 0x5a694b77, 0x1c161a12,
     0xe20aba93, 0xc0e52aa0, 0x3c43e022, 0x121d171b, 0x0e0b0d09,
     0xf2adc78b, 0x2db9a8b6, 0x14c8a91e, 0x578519f1, 0xaf4c0775,
     0xeebbdd99, 0xa3fd607f, 0xf79f2601, 0x5cbcf572, 0x44c53b66,
     0x5b347efb, 0x8b762943, 0xcbdcc623, 0xb668fced, 0xb863f1e4,
     0xd7cadc31, 0x42108563, 0x13402297, 0x842011c6, 0x857d244a,
     0xd2f83dbb, 0xae1132f9, 0xc76da129, 0x1d4b2f9e, 0xdcf330b2,
     0x0dec5286, 0x77d0e3c1, 0x2b6c16b3, 0xa999b970, 0x11fa4894,
     0x472264e9, 0xa8c48cfc, 0xa01a3ff0, 0x56d82c7d, 0x22ef9033,
     0x87c74e49, 0xd9c1d138, 0x8cfea2ca, 0x98360bd4, 0xa6cf81f5,
     0xa528de7a, 0xda268eb7, 0x3fa4bfad, 0x2ce49d3a, 0x500d9278,
     0x6a9bcc5f, 0x5462467e, 0xf6c2138d, 0x90e8b8d8, 0x2e5ef739,
     0x82f5afc3, 0x9fbe805d, 0x697c93d0, 0x6fa92dd5, 0xcfb31225,
     0xc83b99ac, 0x10a77d18, 0xe86e639c, 0xdb7bbb3b, 0xcd097826,
     0x6ef41859, 0xec01b79a, 0x83a89a4f, 0xe6656e95, 0xaa7ee6ff,
     0x2108cfbc, 0xefe6e815, 0xbad99be7, 0x4ace366f, 0xead4099f,
     0x29d67cb0, 0x31afb2a4, 0x2a31233f, 0xc63094a5, 0x35c066a2,
     0x7437bc4e, 0xfca6ca82, 0xe0b0d090, 0x3315d8a7, 0xf14a9804,
     0x41f7daec, 0x7f0e50cd, 0x172ff691, 0x768dd64d, 0x434db0ef,
     0xcc544daa, 0xe4df0496, 0x9ee3b5d1, 0x4c1b886a, 0xc1b81f2c,
     0x467f5165, 0x9d04ea5e, 0x015d358c, 0xfa737487, 0xfb2e410b,
     0xb35a1d67, 0x9252d2db, 0xe9335610, 0x6d1347d6, 0x9a8c61d7,
     0x377a0ca1, 0x598e14f8, 0xeb893c13, 0xceee27a9, 0xb735c961,
     0xe1ede51c, 0x7a3cb147, 0x9c59dfd2, 0x553f73f2, 0x1879ce14,
     0x73bf37c7, 0x53eacdf7, 0x5f5baafd, 0xdf146f3d, 0x7886db44,
     0xca81f3af, 0xb93ec468, 0x382c3424, 0xc25f40a3, 0x1672c31d,
     0xbc0c25e2, 0x288b493c, 0xff41950d, 0x397101a8, 0x08deb30c,
     0xd89ce4b4, 0x6490c156, 0x7b6184cb, 0xd570b632, 0x48745c6c,
     0xd04257b8};

    private static int shift(int r, int shift)
    {
        return (r >>> shift) | (r << -shift);
    }

    /* multiply four bytes in GF(2^8) by 'x' {02} in parallel */

    private static final int m1 = 0x80808080;
    private static final int m2 = 0x7f7f7f7f;
    private static final int m3 = 0x0000001b;

    private static int FFmulX(int x)
    {
        return (((x & m2) << 1) ^ (((x & m1) >>> 7) * m3));
    }

    /*
       The following defines provide alternative definitions of FFmulX that might
       give improved performance if a fast 32-bit multiply is not available.

       private int FFmulX(int x) { int u = x & m1; u |= (u >> 1); return ((x & m2) << 1) ^ ((u >>> 3) | (u >>> 6)); }
       private static final int  m4 = 0x1b1b1b1b;
       private int FFmulX(int x) { int u = x & m1; return ((x & m2) << 1) ^ ((u - (u >>> 7)) & m4); }

    */

    private static int inv_mcol(int x)
    {
        int f2 = FFmulX(x);
        int f4 = FFmulX(f2);
        int f8 = FFmulX(f4);
        int f9 = x ^ f8;

        return f2 ^ f4 ^ f8 ^ shift(f2 ^ f9, 8) ^ shift(f4 ^ f9, 16) ^ shift(f9, 24);
    }


    private static int subWord(int x)
    {
        return (S[x&255]&255 | ((S[(x>>8)&255]&255)<<8) | ((S[(x>>16)&255]&255)<<16) | S[(x>>24)&255]<<24);
    }

    /**
     * Calculate the necessary round keys
     * The number of calculations depends on key size and block size
     * AES specified a fixed block size of 128 bits and key sizes 128/192/256 bits
     * This code is written assuming those are the only possible values
     */
    private int[][] generateWorkingKey(
                                    byte[] key,
                                    boolean forEncryption)
    {
        int         KC = key.length / 4;  // key length in words
        int         t;

        if (((KC != 4) && (KC != 6) && (KC != 8)) || ((KC * 4) != key.length))
        {
            throw new IllegalArgumentException("Key length not 128/192/256 bits.");
        }

        ROUNDS = KC + 6;  // This is not always true for the generalized Rijndael that allows larger block sizes
        int[][] W = new int[ROUNDS+1][4];   // 4 words in a block

        //
        // copy the key into the round key array
        //

        t = 0;
        int i = 0;
        while (i < key.length)
        {
            W[t >> 2][t & 3] = (key[i]&0xff) | ((key[i+1]&0xff) << 8) | ((key[i+2]&0xff) << 16) | (key[i+3] << 24);
            i+=4;
            t++;
        }

        //
        // while not enough round key material calculated
        // calculate new values
        //
        int k = (ROUNDS + 1) << 2;
        for (i = KC; (i < k); i++)
        {
            int temp = W[(i - 1) >> 2][(i - 1) & 3];
            if ((i % KC) == 0)
            {
                temp = subWord(shift(temp, 8)) ^ rcon[(i / KC) - 1];
            }
            else if ((KC > 6) && ((i % KC) == 4))
            {
                temp = subWord(temp);
            }

            W[i >> 2][i & 3] = W[(i - KC) >> 2][(i - KC) & 3] ^ temp;
        }

        if (!forEncryption)
        {
            for (int j = 1; j < ROUNDS; j++)
            {
                for (i = 0; i < 4; i++)
                {
                    W[j][i] = inv_mcol(W[j][i]);
                }
            }
        }

        return W;
    }

    private int         ROUNDS;
    private int[][]     WorkingKey = null;
    private int         C0, C1, C2, C3;
    private boolean     forEncryption;

    private static final int BLOCK_SIZE = 16;

    /**
     * default constructor - 128 bit block size.
     */
    public AESFastEngine()
    {
    }

    /**
     * initialise an AES cipher.
     *
     * @param forEncryption whether or not we are for encryption.
     * @param params the parameters required to set up the cipher.
     * @exception IllegalArgumentException if the params argument is
     * inappropriate.
     */
    @Override
    public void init(
        boolean           forEncryption,
        CipherParameters  params)
    {
        if (params instanceof KeyParameter)
        {
            WorkingKey = generateWorkingKey(((KeyParameter)params).getKey(), forEncryption);
            this.forEncryption = forEncryption;
            return;
        }

        throw new IllegalArgumentException("invalid parameter passed to AES init - " + params.getClass().getName());
    }

    @Override
    public String getAlgorithmName()
    {
        return "AES";
    }

    @Override
    public int getBlockSize()
    {
        return BLOCK_SIZE;
    }

    @Override
    public int processBlock(
        byte[] in,
        int inOff,
        byte[] out,
        int outOff)
    {
        if (WorkingKey == null)
        {
            throw new IllegalStateException("AES engine not initialised");
        }

        if ((inOff + (32 / 2)) > in.length)
        {
            throw new DataLengthException("input buffer too short");
        }

        if ((outOff + (32 / 2)) > out.length)
        {
            throw new DataLengthException("output buffer too short");
        }

        if (forEncryption)
        {
            unpackBlock(in, inOff);
            encryptBlock(WorkingKey);
            packBlock(out, outOff);
        }
        else
        {
            unpackBlock(in, inOff);
            decryptBlock(WorkingKey);
            packBlock(out, outOff);
        }

        return BLOCK_SIZE;
    }

    @Override
    public void reset()
    {
    }

    private void unpackBlock(
        byte[]      bytes,
        int         off)
    {
        int     index = off;

        C0 = (bytes[index++] & 0xff);
        C0 |= (bytes[index++] & 0xff) << 8;
        C0 |= (bytes[index++] & 0xff) << 16;
        C0 |= bytes[index++] << 24;

        C1 = (bytes[index++] & 0xff);
        C1 |= (bytes[index++] & 0xff) << 8;
        C1 |= (bytes[index++] & 0xff) << 16;
        C1 |= bytes[index++] << 24;

        C2 = (bytes[index++] & 0xff);
        C2 |= (bytes[index++] & 0xff) << 8;
        C2 |= (bytes[index++] & 0xff) << 16;
        C2 |= bytes[index++] << 24;

        C3 = (bytes[index++] & 0xff);
        C3 |= (bytes[index++] & 0xff) << 8;
        C3 |= (bytes[index++] & 0xff) << 16;
        C3 |= bytes[index++] << 24;
    }

    private void packBlock(
        byte[]      bytes,
        int         off)
    {
        int     index = off;

        bytes[index++] = (byte)C0;
        bytes[index++] = (byte)(C0 >> 8);
        bytes[index++] = (byte)(C0 >> 16);
        bytes[index++] = (byte)(C0 >> 24);

        bytes[index++] = (byte)C1;
        bytes[index++] = (byte)(C1 >> 8);
        bytes[index++] = (byte)(C1 >> 16);
        bytes[index++] = (byte)(C1 >> 24);

        bytes[index++] = (byte)C2;
        bytes[index++] = (byte)(C2 >> 8);
        bytes[index++] = (byte)(C2 >> 16);
        bytes[index++] = (byte)(C2 >> 24);

        bytes[index++] = (byte)C3;
        bytes[index++] = (byte)(C3 >> 8);
        bytes[index++] = (byte)(C3 >> 16);
        bytes[index++] = (byte)(C3 >> 24);
    }

    private void encryptBlock(int[][] KW)
    {
        int r, r0, r1, r2, r3;

        C0 ^= KW[0][0];
        C1 ^= KW[0][1];
        C2 ^= KW[0][2];
        C3 ^= KW[0][3];

        r = 1;
        while (r < ROUNDS - 1)
        {
            r0 = T0[C0&255] ^ T1[(C1>>8)&255] ^ T2[(C2>>16)&255] ^ T3[(C3>>24)&255] ^ KW[r][0];
            r1 = T0[C1&255] ^ T1[(C2>>8)&255] ^ T2[(C3>>16)&255] ^ T3[(C0>>24)&255] ^ KW[r][1];
            r2 = T0[C2&255] ^ T1[(C3>>8)&255] ^ T2[(C0>>16)&255] ^ T3[(C1>>24)&255] ^ KW[r][2];
            r3 = T0[C3&255] ^ T1[(C0>>8)&255] ^ T2[(C1>>16)&255] ^ T3[(C2>>24)&255] ^ KW[r++][3];
            C0 = T0[r0&255] ^ T1[(r1>>8)&255] ^ T2[(r2>>16)&255] ^ T3[(r3>>24)&255] ^ KW[r][0];
            C1 = T0[r1&255] ^ T1[(r2>>8)&255] ^ T2[(r3>>16)&255] ^ T3[(r0>>24)&255] ^ KW[r][1];
            C2 = T0[r2&255] ^ T1[(r3>>8)&255] ^ T2[(r0>>16)&255] ^ T3[(r1>>24)&255] ^ KW[r][2];
            C3 = T0[r3&255] ^ T1[(r0>>8)&255] ^ T2[(r1>>16)&255] ^ T3[(r2>>24)&255] ^ KW[r++][3];
        }

        r0 = T0[C0&255] ^ T1[(C1>>8)&255] ^ T2[(C2>>16)&255] ^ T3[(C3>>24)&255] ^ KW[r][0];
        r1 = T0[C1&255] ^ T1[(C2>>8)&255] ^ T2[(C3>>16)&255] ^ T3[(C0>>24)&255] ^ KW[r][1];
        r2 = T0[C2&255] ^ T1[(C3>>8)&255] ^ T2[(C0>>16)&255] ^ T3[(C1>>24)&255] ^ KW[r][2];
        r3 = T0[C3&255] ^ T1[(C0>>8)&255] ^ T2[(C1>>16)&255] ^ T3[(C2>>24)&255] ^ KW[r++][3];

        // the final round's table is a simple function of S so we don't use a whole other four tables for it

        C0 = (S[r0&255]&255) ^ ((S[(r1>>8)&255]&255)<<8) ^ ((S[(r2>>16)&255]&255)<<16) ^ (S[(r3>>24)&255]<<24) ^ KW[r][0];
        C1 = (S[r1&255]&255) ^ ((S[(r2>>8)&255]&255)<<8) ^ ((S[(r3>>16)&255]&255)<<16) ^ (S[(r0>>24)&255]<<24) ^ KW[r][1];
        C2 = (S[r2&255]&255) ^ ((S[(r3>>8)&255]&255)<<8) ^ ((S[(r0>>16)&255]&255)<<16) ^ (S[(r1>>24)&255]<<24) ^ KW[r][2];
        C3 = (S[r3&255]&255) ^ ((S[(r0>>8)&255]&255)<<8) ^ ((S[(r1>>16)&255]&255)<<16) ^ (S[(r2>>24)&255]<<24) ^ KW[r][3];

    }

    private void decryptBlock(int[][] KW)
    {
        int r0, r1, r2, r3;

        C0 ^= KW[ROUNDS][0];
        C1 ^= KW[ROUNDS][1];
        C2 ^= KW[ROUNDS][2];
        C3 ^= KW[ROUNDS][3];

        int r = ROUNDS-1;

        while (r>1)
        {
            r0 = Tinv0[C0&255] ^ Tinv1[(C3>>8)&255] ^ Tinv2[(C2>>16)&255] ^ Tinv3[(C1>>24)&255] ^ KW[r][0];
            r1 = Tinv0[C1&255] ^ Tinv1[(C0>>8)&255] ^ Tinv2[(C3>>16)&255] ^ Tinv3[(C2>>24)&255] ^ KW[r][1];
            r2 = Tinv0[C2&255] ^ Tinv1[(C1>>8)&255] ^ Tinv2[(C0>>16)&255] ^ Tinv3[(C3>>24)&255] ^ KW[r][2];
            r3 = Tinv0[C3&255] ^ Tinv1[(C2>>8)&255] ^ Tinv2[(C1>>16)&255] ^ Tinv3[(C0>>24)&255] ^ KW[r--][3];
            C0 = Tinv0[r0&255] ^ Tinv1[(r3>>8)&255] ^ Tinv2[(r2>>16)&255] ^ Tinv3[(r1>>24)&255] ^ KW[r][0];
            C1 = Tinv0[r1&255] ^ Tinv1[(r0>>8)&255] ^ Tinv2[(r3>>16)&255] ^ Tinv3[(r2>>24)&255] ^ KW[r][1];
            C2 = Tinv0[r2&255] ^ Tinv1[(r1>>8)&255] ^ Tinv2[(r0>>16)&255] ^ Tinv3[(r3>>24)&255] ^ KW[r][2];
            C3 = Tinv0[r3&255] ^ Tinv1[(r2>>8)&255] ^ Tinv2[(r1>>16)&255] ^ Tinv3[(r0>>24)&255] ^ KW[r--][3];
        }

        r0 = Tinv0[C0&255] ^ Tinv1[(C3>>8)&255] ^ Tinv2[(C2>>16)&255] ^ Tinv3[(C1>>24)&255] ^ KW[r][0];
        r1 = Tinv0[C1&255] ^ Tinv1[(C0>>8)&255] ^ Tinv2[(C3>>16)&255] ^ Tinv3[(C2>>24)&255] ^ KW[r][1];
        r2 = Tinv0[C2&255] ^ Tinv1[(C1>>8)&255] ^ Tinv2[(C0>>16)&255] ^ Tinv3[(C3>>24)&255] ^ KW[r][2];
        r3 = Tinv0[C3&255] ^ Tinv1[(C2>>8)&255] ^ Tinv2[(C1>>16)&255] ^ Tinv3[(C0>>24)&255] ^ KW[r][3];

        // the final round's table is a simple function of Si so we don't use a whole other four tables for it

        C0 = (Si[r0&255]&255) ^ ((Si[(r3>>8)&255]&255)<<8) ^ ((Si[(r2>>16)&255]&255)<<16) ^ (Si[(r1>>24)&255]<<24) ^ KW[0][0];
        C1 = (Si[r1&255]&255) ^ ((Si[(r0>>8)&255]&255)<<8) ^ ((Si[(r3>>16)&255]&255)<<16) ^ (Si[(r2>>24)&255]<<24) ^ KW[0][1];
        C2 = (Si[r2&255]&255) ^ ((Si[(r1>>8)&255]&255)<<8) ^ ((Si[(r0>>16)&255]&255)<<16) ^ (Si[(r3>>24)&255]<<24) ^ KW[0][2];
        C3 = (Si[r3&255]&255) ^ ((Si[(r2>>8)&255]&255)<<8) ^ ((Si[(r1>>16)&255]&255)<<16) ^ (Si[(r0>>24)&255]<<24) ^ KW[0][3];
    }
}
